text:
|Publication number
|Publication type
|Application number
|Publication date
|Mar 13, 1984
|Filing date
|Nov 18, 1981
|Priority date
|Nov 18, 1981
|Fee status
|Publication number
|Cecil R. Jones
|Original Assignee
|Jones Cecil R
|Export Citation
|BiBTeX, EndNote, RefMan
|Non-Patent Citations (1), Referenced by (113), Classifications (18), Legal Events (4)
|External Links: USPTO, USPTO Assignment, Espacenet
This invention relates to novel apparatus for producing controlled motion of one mass relative to another mass.
An example of a use for such apparatus is as test apparatus to simulate the vibrations that various kinds of electrical, electronic, mechanical or hydraulic equipment may actually experience to ensure that the equipment being tested will meet its design specifications. For instance, equipment designed for use in a missile must perform its intended functions within the range of frequencies and amplitudes of motion to which the equipment is subjected during the actual missile flight. To assure operational reliability and performance of such equipment, the equipment must be tested before actual use on test apparatus capable of simulating the vibrations expected to be encountered.
Test equipment currently available generally are capable of simulating various vibrational frequencies and amplitudes with one or two degrees of freedom, i.e., along one or two axes of an XYZ coordinate system. Often, even if two axes are used, the motions are not independent. Thus testing such equipment for vibration resistance along all three axes, requires two or three separate tests with the equipment under test oriented in the two or three different directions. Aside from the additional time expended, this is clearly a compromise relative to the vibrational conditions actually experienced by the equipment, which will in actual use be simultaneously subject to vibration in all three directions.
More recent designs of test equipment provide two or three degrees of freedom. However, such designs employ multiple actuators operating in each of several of the three different directions. As a result, the equipment is expensive and cumbersome. Moreover, the multiple actuators extending in each direction must be cross-coupled or compensated to maintain dimensional stability of the equipment support. Still further the actuators used are relatively short. As a result, cross-coupling or compensation of the actuators extending in the different directions becomes necessary for the same reason. This adds to the cost and complexity of the equipment. No apparatus to the best of my knowledge is available that provides in excess of three degrees of freedom.
A principal object of the invention is simplified apparatus capable of generating controlled motion with at least three degrees of freedom.
A further object of the invention is apparatus capable of providing controlled motion with from three to six degrees of freedom.
Another object of the invention is a novel actuator for use in controlled motion apparatus.
These and further objects of the invention are achieved, briefly speaking, by apparatus according to the invention which comprises a rigid base member commonly referred to as a reaction mass, a support, and means for mounting the support to the base member. The mounting means comprises three actuators connected between the support and base and cooperating when driven to cause the support to undergo the desired controlled motion with at least three degrees of freedom. This means that the support can be caused to vibrate with different frequencies and or amplitudes in from one to three non-parallel directions, each controlled without necessarily referencing the motion of the other one or two motions.
In a preferred embodiment, each of the actuators are constructed and mounted to cause controlled linear displacement but without rotation of the support along three orthogonal axes of an XYZ coordinate system.
In still a further preferred embodiment, means are included to provide controlled rotation of the actuators about their respective displacement axis, with the result that six degrees of freedom can be obtained.
The invention will now be described in greater detail with reference to the accompanying drawings, wherein:
FIG. 1 shows an XYZ coordinate system for illustrative purposes;
FIG. 2 is a perspective view of a preferred embodiment of the invention;
FIG. 3. is a perspective view of an anti-rotation, linear displacement actuator for use in the apparatus of FIG. 2;
FIG. 4 is a partly cross-sectional view along the line 4--4 of FIG. 3;
FIG. 5 is a partly cross-sectional view along the line 5--5 of FIG. 4;
FIG. 6 is a partly cross-sectional view along the line 6--6 of FIG. 2 showing mounting of the actuator of FIG. 3;
FIG. 7 is an end view of FIG. 6 along the line 7--7;
FIG. 8 is a schematic view illustrating operation of the apparatus of FIG. 2;
FIG. 9 is a view similar to FIG. 6 of a modification;
FIG. 10 is a view similar to FIG. 7 along the line 10--10 of FIG. 9;
FIG. 11 is a view similar to FIG. 5 of a modification.
In order to assist in understanding the underlying concepts of the invention, FIG. 1 illustrates a conventional Cartesian or XYZ coordinate system and the sign conventions to be used in the later description. The X, Y and Z axes are orthogonal from a common origin O wherein the following definitions apply:
XT =translation in the X direction;
XR =rotation about the X axis;
YT =translation in the Y direction;
YR =rotation about the Y axis;
ZT =translation in the Z direction;
ZR =rotation about the Z axis;
+ (Plus)=translation away from the origin or clockwise (CW) rotation viewed from the origin;
- (Minus)=translation toward the origin or counterclockwise (CCW) rotation viewed from the origin.
In this three dimensional space, there are six degrees of freedom possible, three of which are linear translation or displacement in each of the X, Y and Z directions (without regard to sign), and the remaining three are rotation about each of the three axes (also without regard to sign). In the various drawings from time to time will appear symbols from the FIG. 1 coordinate system to assist the reader in orienting the various elements constituting the invention.
FIG. 2 schematically illustrates a vibration simulator in accordance with the invention possessing controlled independent displacement along any or all of the three orthogonal axes. The coordinate system of FIG. 1 is partly superimposed on the apparatus, which comprises a rigid base member 10 which serves as a reaction or seismic mass against the vibrations. It may, for example, be of steel reinforced concrete. A support member 11 is provided. This is conveniently made in the form of a table of light stiff construction on which the equipment to be tested will be mounted. It can be made, for example, of aluminum or magnesium of the egg-crate type. The support or table 11 is mounted to the base 10 by means of three linear motion, anti-rotation actuator devices 12. Two of the actuators 12 extending in the X and Y directions are shown in FIG. 2 in solid lines. The third, shown in dashed lines, is mounted under the table center and extends in the Z direction. The table 11 is supported on the reaction mass 10 by the three actuators 12 only.
The three actuators 12 are identical. A perspective view of the actuator 12 extending along the X-axis is illustrated in FIG. 3, and partly cross-sectional views along the lines 4--4 of FIG. 3 and 5--5 of FIG. 4 in FIGS. 4 and 5, respectively. The actuator 12 comprises stiff telescoping or nested splined tubes 15, 16. The splined tubes 15 and 16 allow relative axial displacement of the tubes but prevent their rotation. The splining is illustrated at 17 in FIG. 5 and extends completely around each tube. Gimbal rings 20, 21 are mounted at each end of the nested tubes 15, 16. The gimbal ring 20 mounted on the end of outer tube 15 comprises a first gimbal pin 22 (shown vertical in the drawings) which is journalled through the center of the end of the outer tube 15 and allows the actuator to pivot about the pin axis (Y-axis). The gimbal ring 21 secured to the inner tube 16 end comprises a similarly oriented first gimbal pin 23 in a similar mounting configuration.
Within the nested tubes 15, 16 is mounted an hydraulic cylinder 25. The large cylinder end 26 at the right of FIG. 4 is secured as by a bracket and bolts 27 to the first gimbal pin 22 of the ring 20. The smaller cylinder end or piston rod 28 is similarly fastened to the first gimbal pin 23 of the left gimbal ring 21. The usual conduits or tubes for supplying hydraulic fluid to the cylinder 25, which are conventional, have been omitted for clarity.
Mounted next to the actuator cylinder 25 is a position transducer or indicator 30. One end of the position indicator 30 is fixed to the cylinder housing 25, and the opposite movable part of the position indicator 30 is fixed to the rod end 28. Thus, displacement of the nested tubes 15, 16 can be detected by the position indicator 30. The hydraulic cylinder 25 is a conventional positionable linear driving device, and the position indicator 30 is similarly conventional. It can be one of a number of commonly available linear position indicating devices, such as a linear variable differential transformer, which generates an electrical signal whenever displacement occurs from an initial set position.
The mounting of each linear actuator to the table 11 and reaction mass 10 is illustrated in FIGS. 6 and 7. FIG. 6 is a partial sectional view along the line 6--6 of FIG. 2, and FIG. 7 is a partial end view along the line 7--7 of FIG. 6. Firstly, it will be observed that the table 11 is a configured as an egg-crate, with a table top designated 35 and provided with suitably located holes 36 for mounting the equipment to be tested. As will be observed in FIG. 6, a bracket 38 securely fastens the laterally-oriented or second gimbal pin 18 of the ring 20 to a section of the table as by bolts 39. The opposite end of the actuator 12 is similarly securely fastened by a pair of brackets 40, bolted 41 to the reaction mass 10, to the laterally-oriented second gimbal pin 19 of the left gimbal ring 21. The gimbal pins at each end are located so that their center lines intersect, as shown, at the central axis of the nested tubes 15, 16. In FIG. 6, the transducer 30 has been omitted for clarity. The remaining two actuators 12 extending in the Y and Z directions are similarly mounted, so that the table 11 is suspended on the reaction mass 10 only by the three orthogonally directed actuators 12.
In operation, a suitable closed loop control system (not shown) similar to that employed in known vibration simulators providing one to three degrees of freedom, supplies hydraulic fluid to each of the actuators 12 to cause each of the actuators to undergo a vibrational displacement along its respective X, Y or Z axis with a frequency and amplitude simulating the conditions the equipment will be subjected to in actual field use. Each of the actuators 12 can thus be caused to displace the table along its displacement axis with the required controlled motion. Since the three actuators 12 allow independent controlled displacement along each of the orthogonal X, Y and Z axes, the table will be simultaneously vibrated in all three directions and and thus with three degrees of freedom. The gimbal mountings at each end of each actuator allows the actuator to pivot off of its displacement axis to accomodate a displacement by another actuator along the latter's displacement axis, while resisting torsional forces. This is schematically illustrated in FIG. 8 for the X-axis actuator 12 and Z-axis actuator 12 upon displacement of the X-axis actuator.
In FIG. 8, reference numeral 50 represents the fixed reaction mass, reference numeral 51 the gimbal mounting at the reaction mass, and reference numeral 52 the gimbal mounting at the table 11. The X-axis actuator, which is not shown, would be connected between the two gimbal rings 51 and 52.
Similarly, reference numeral 50 at the bottom is the reaction mass part underneath the table 11, and the corresponding gimbal mountings for the Z-axis actuator is shown at 53 at the reaction mass and at 54 at the table bottom. The Z-axis actuator, not shown, would be connected between its two gimbal rings 53 and 54. The solid lines in the figure show a first position of the table 11. Assume now that the X-axis actuator is displaced toward the right in FIG. 8 by an amount Dx, while the Y-axis and Z-axis actuators remain inactive. Due to the anti-rotation construction of the actuators (the splined nested tubes), the Y-axis actuator prevents rotation of the table 11 around the Y-axis (YR in FIG. 1). As a result, the three actuators will tilt to accomodate the displacement DX. The new or second position taken up by the table 11 is illustrated in dashed lines in FIG. 8. The X-axis actuator as shown will be tilted downward. The Y-axis actuator not shown will undergo a similar downward tilting as well as a tilting toward the right of FIG. 8. The Z-axis actuator will pivot along an arc to the right as illustrated. The result is that the table 10 in addition to undergoing the displacement DX to the right, will also undergo a downward displacement DZ. (For completeness sake, the displacements have been exaggerated to simplify the illustration). The displacement DZ represents an undesired deviation from pure translation in the X-Y plane. This deviation may be reduced to the desired level by appropriate selection of the dimensions DX and L, and the spacing between the end gimbal ring mounts.
For example, assume the desired maximum deviation or error is 4% of the total displacement, and the desired maximum half displacement (dimension DX) is 15 cm, providing a total displacement of 30 cm. Then dimension L is chosen to be 100 cm. These values are typical of desired simulation. Some current designs which attempt similar solutions employ four Z-axis actuators, two X-axis actuators, and one Y-axis actuator (but without the anti-rotation feature), and attempt to compensate for any undesired error by electro-hydraulic cross control. That is, actuation in one direction, say the X-direction, automatically results in being applied to the Z-axis actuators a matching signal that is proportional to the magnitude of the X-displacement. However, such known designs have not performed as desired, because there is an inherent error in the signal processing of the order of 10% of the displacement. In addition, due to the use of multiple actuators in both the Z and X axes, compensation cross-control is needed among the actuators extending in the same direction to maintain the table torsionally stable.
In contrast, in the apparatus according to the invention, only three actuators are needed, one only extending in each of the three orthogonal directions, and there exists no need for such cross-controlling or compensation circuitry. Thus, the equipment is much less complex, and the required control system is greatly simplified, because each channel of controlled feedback can be treated as a simple linear actuator. Further, one to six degrees of freedom may be obtained as may be desired. It should also be noted that in the example given, the error was calculated for maximum displacement, which for seismic simulation occurs only at low frequencies of about 1 Hz. At frequencies of about 10 Hz., the error is reduced to about 1/2%, which is fully acceptable. In the example given, the table can have dimensions of one meter by one meter, and should be able to support loads up to about 500 kilograms.
To summarize, in the operation of the apparatus according to the invention, a conventional electro-hydraulic closed loop control system or electrical feedback system positions independently each linear motion, anti-rotation actuator device 12. Since one end is attached to the fixed reaction mass and the other end to the test table, the test table assumes the desired driven position. The splined construction prevents rotation XR in the YT ZT plane by providing a load path from the table brackets through the spline to the reaction mass. The splined construction of the other actuators 12 prevent the corresponding rotations YR and ZR. However, the gimbal mountings at each end of the linear motion, anti-rotation actuators does not restrict linear motion in the XT, YT or ZT directions. Thus the table 11 is maintained torionally stable, that is, substantially in the X-Y plane or parallel thereto upon actuation of the X-axis, Y-axis, or Z-axis actuator 12. By combining the three actuators operable in the three orthogonal X, Y and Z axes, three controllable independent linear degrees of freedom are achieved, and the test table is maintained dynamically stable by providing load paths via the splined construction and gimbal mountings for the three torsional components of motion XR, YR and ZR.
The above concept can be extended to apparatus to provide six degrees of freedom by mounting the gimbal ring for rotation within a sleeve in the reaction mass. This is illustrated in FIGS. 9 and 10 for the X-axis actuator 12. Similar constructions would be provided for the Y-axis and Z-axis actuators. Similar references numerals are employed for corresponding parts of the embodiment illustrated in FIGS. 6 and 7.
In FIGS. 9 and 10, an insert 60 is secured to the reaction mass 10. A rotation sleeve 61 is journalled within the insert 60 by way of two rotation bearings 62 and two thrust bearings 63. The left side of sleeve 61 is extended to form a bracket 65 which is fastened to the brackets 40 which in turn are secured to the second gimbal pin 19 at the left side of FIG. 9. The bracket 65 of the sleeve 61 has an extension arm 66. An additional hydraulic cylinder 70 is provided which is mounted on the reaction mass 10 by way of an insert 71 embedded therein. The cylinder 70 end is pivotably mounted to the reaction mass by a bracket 72 and pin 73. The rod end 74 is secured by a pivotable pin 75 to the extension arm 66. A conventional position transducer 77 is mounted between the cylinder 70 and rod 74 ends. As before, the conventional fluid couplings are not shown for clarity. When the rotation cylinder 70 is actuated, the splined linear motion actuator 12 is rotated (XR) about the X-axis, and the amount of rotation is sensed by the rotation position transducer 77. This construction can be employed to rotate or rock the table 11 about the X-axis in a controlled manner. The similar constructions at the Y-axis linear actuator and the Z-axis linear actuator will similarly allow controlled rotation or rocking of the table about their respective axes, to produce as desired YR and ZR. Thus, the test table will possess six independently controllable degrees of freedom.
If the rotation of one actuator is significant, it may be necessary to rotate the other two actuators an appropriate amount to accommodate the rotational motion of the one actuator. This is easily achieved by a conventional electronic system which receives the signals from the rotation position indicators and supplies the necessary fluid to the various actuators to maintain stability. Such systems are well known in the art as closed loop control systems and can be readily applied by the skilled artisan to the apparatus of the invention. Thus, the apparatus with the rotational feature above described with reference to FIGS. 9 and 10 provides six degrees of freedom under user control and any predetermined motion set. Moreover, any single degree of freedom or any multiple of the six degrees of freedom are also obtainable as will be readily apparent to those skilled in the art.
It will be understood that where reference in this description is made to hydraulic position or feedback position control, this can also be achieved by equivalent means such as digital electro-mechanical position control. The former employs well known analog closed loop control principles. The latter is also commercially available in digital form from minicomputer suppliers. For instance, Hewlett-Packard has available an HP 2100 MX minicomputer, and supplies software which will provide electrical signals, which will cause fluid to be supplied independently to any actuator 12 to cause it to undergo a desired frequency and amplitude of linear displacement, and uses the signal derived from the associated position indicator in a feedback mode to ensure that the cylinder is maintaining the desired vibration. Similar means can be employed to drive each of the actuators 12 in their linear displacement, and can also be used to actuate independently the rotational cylinders to obtain the additional three degrees of freedom as mentioned, though, in the latter case, some cross-control of the three rotational cylinders may be needed for compensation. For those who wish more details on digital-control techniques to perform closed loop position control with mono-axis or cross-axis compensation for use with a vibration test system, reference is made to a paper presented by Smith et al at the 1980 SAE Aerospace Congress held at Los Angeles on 13 Oct. 1980 (paper No. 801233) entitled "Digital Control Techniques For A Three Axis Vibration Test System", and a recent article on LVDT industrial control circuitry and systems, Electronic Design, Sept. 17, 1981, pps. 151-156, both of whose contents are herein incorporated by reference.
As will be clear from the foregoing, one of the key features of the invention is the anti-rotational construction of the linear displacement actuators to provide torsional stability of the table. This is achieved by the preferred splined tube construction described in connection with FIGS. 3-5. The invention is not limited to the latter, and other constructions capable of providing anti-rotation linear displacement can be substituted. FIG. 11 shows one such alternative construction, in a view similar to FIG. 5. In this embodiment, linear bearings are employed between the nested tubes 15 and 16. Elongated arcuate raceways 80 are provided in spaced relation around the inside of outer tube 15, and cooperating bearing elements 81 are mounted on the outer surface of inner tube 16. These linear bearings 80, 81 allow linear displacement but without permitting rotation of the nested tubes 15 and 16.
While the principles of the invention have been described in connection with apparatus for vibration testing of equipment, it will be understood that the same concepts are applicable to other types of equipment. An example of another type is a machine tool having a cutter, wherein the cutter is held in a fixed position and the workpiece is mounted on a table movable along three independent axes, for profile shaping or cutting of the workpiece by the cutter. In this case, the control system would be programmed to cause the actuators to displace the table carrying the workpiece in the desired X, Y and Z directions so that the cutter could carry out the desired milling of the workpiece. The same benefits would be achieved in this application of the invention as are obtained with the vibration simulator. Other uses of the inventive principles herein described will be apparent to those skilled in the art.
While the use of the gimbal mountings at opposite ends of the actuators are preferred, it will be understood that other mechanisms performing similar functions can be substituted. For example, as will be evident from the text "Mechanisms and Dynamics of Machinery" by Mabie and Ocoirk (2nd Ed., 1963, Wiley), pps. 26-32, a gimbal is a modification of a Hook-type universal joint, and the Bendix-Weist Joint illustrated in FIG. 2.23 on p. 29, as an example, may be adapted to perform the gimbal function described. This is accomplished by providing a direct mounting for the table 11 in place of shaft B shown in FIG. 2.23, and the tube 15 with actuator 25 and position indicator 30 within, in place of shaft A as shown in FIG. 2.23 of the reference above.
While my invention has been described in connection with specific embodiments thereof, those skilled in the art will recognize that various modifications are possible within the principles enunciated herein and thus the present invention is not to be limited to the specific embodiments disclosed.
|"Ten Ways to . . . Prevent Piston Rod Rotation", D. Rowan, Product Engineering, Aug. 1, 1960; pp. 31-35 & 48-53.
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|Sep 24, 2013
|Simbionix Ltd.
|System and method for performing computerized simulations for image-guided procedures using a patient specific model
|Apr 13, 2012
|Nov 26, 2013
|Immersion Corporation
|Systems and methods for resonance detection
|Dec 8, 2003
|Aug 12, 2014
|Immersion Corporation
|Haptic communication devices
|Dec 8, 2003
|Sep 9, 2014
|Immersion Corporation
|Methods and systems for providing a virtual touch haptic effect to handheld communication devices
|Mar 1, 2001
|Aug 2, 2001
|Immersion Corporation
|Tactile mouse
|May 9, 2001
|Feb 14, 2002
|Immersion Corporation
|Laparoscopic simulation interface
|Aug 22, 2001
|Feb 21, 2002
|Immersion Corporation
|Interactions between simulated objects using with force feedback
|Feb 7, 2002
|Jun 13, 2002
|Immersion Corporation
|Interface device with tactile responsiveness
|Aug 6, 2002
|Feb 27, 2003
|Immersion Corporation
|Haptic feedback for touchpads and other touch controls
|Jul 10, 2003
|Apr 22, 2004
|Rosenberg Louis B.
|Haptic feedback for touchpads and other touch controls
|Jun 25, 2002
|Jul 29, 2004
|Rosenberg Louis B.
|Force Feedback Device
|Feb 19, 2004
|Aug 26, 2004
|Rosenberg Louis B.
|Computer interface apparatus including linkage having flex
|Feb 27, 2004
|Aug 26, 2004
|Jacobus Charles J.
|Force feedback system and actuator power management
|Mar 8, 2004
|Nov 18, 2004
|Schena Bruce M.
|Force feedback device including actuator with moving magnet
|Dec 8, 2003
|Dec 21, 2006
|Grant Danny A
|Haptic messaging in handheld communication devices
|Jun 30, 1998
|Jan 22, 2002
|Immersion Corporation
|Direct-drive manipulator for pen-based force display
|Jun 18, 2004
|Jun 30, 2009
|Immersion Corporation
|Low-cost haptic mouse implementations
|Sep 26, 2011
|May 9, 2012
|Parallel workbench for realizing space three-translation high-frequency excitation
|Sep 26, 2011
|Feb 12, 2014
|Parallel workbench for realizing space three-translation high-frequency excitation
|Aug 11, 1993
|May 31, 1995
|Gei Systems, Inc.
|Controllable gear testing system
|Mar 16, 2012
|Sep 18, 2013
|W�lfel Beratende Ingenieure GmbH & Co. KG
|Dampening assembly
|Nov 5, 1996
|May 29, 1997
|Immersion Human Interface Corp
|Method and apparatus for providing low cost force feedback and mechanical i/o for computer systems
|U.S. Classification
|188/378, 403/74, 403/57, 73/663
|International Classification
|Cooperative Classification
|European Classification
|Apr 6, 1987
|Fee payment
Year of fee payment: 4
|Oct 15, 1991
|Maintenance fee reminder mailed
|Mar 15, 1992
|Lapse for failure to pay maintenance fees
|May 19, 1992
|Expired due to failure to pay maintenance fee
Effective date: 19920315


text:
The process of buying a new BMW car or truck can seem overwhelming if you don't know where to begin. Edmunds.com can get you started on the right track with a convenient directory of BMW car dealerships in and around Rocky Mount, North Carolina. Compare online price quotes on the new or used car, truck, SUV, minivan, or wagon of your choice to locate the best deals. Edmunds.com makes it easy to find trusted BMW car dealers in Rocky Mount, saving car buyers time and money on what will be an important purchase.
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Langkawi and KedahFrom $12
Recommended hotels in Langkawi and Kedah
From$101Per night
Berjaya LangkawiLangkawi, Langkawi and Kedah , Karung berkunci 200, burau bay -/5 Customer reviewsof 32 Opinions
Located in Burau Bay on the island of Langkawi, an archipelago in the state of Kekah comprising 104 small islands, of which Langkawi is the largest, this hotel is cocooned within a rainforest sanctuary. Rich in legends and folklore, historic sights, lush greenery and scenic lakes, the hotel embraces boundless views of emerald waters and green-cushioned mountains. With an array inspired spa treatments, time spent at this hotel is filled with a sense of natural connection and harmonious retreat.See more
From$168Per night
Meritus Pelangi Beach Resort & Spa LangkawiLangkawi, Langkawi and Kedah , Pantai cenang -/5 Customer reviewsof 25 Opinions
The spectacular Meritus Pelangi Beach Resort & Spa, Langkawi is located on the northwest of Malaysia. This stunning resort is set amidst 12 hectares of award-winning tropical gardens on a palm-fringed beach and affords panoramic views of Pulau Rebak Kecil on the main island Meritus. The town centre of lies 25 km away and the tourist centre is just a 20-minute drive from the resort.Blending seamlessly into its picture perfect surroundings, the hotel exudes a serene atmosphere making it the perfect choice for all the family. The colourful kids club and babysitter service ensure that both adults and children will enjoy a memorable stay. The decor of the rooms is inspired by traditional Malaysian villages and are set in separate elegant wooden chalets, each one enjoying equally attractive lake, sea or pool views.See more
From$34Per night
Bella Vista Waterfront Resort LangkawiLangkawi, Langkawi and Kedah , Persiaran mutiara, pusat dagangan kelana mas, kuah -
This pleasant hotel is set on 60 acres of landscaped gardens, facing the Andaman Sea, it provides space and privacy in a quiet yet friendly environment in Kuah Town. Situated within a few minute's walk of Langkawi's numerous tourist attractions, famed duty-free shops and the town centre, it is the perfect spot for being both close to the excitement of the area, but still secluded for its noises and commotion. With its unique architecture this place tries to provide a comfortable homely atmosphere. Most of the rooms face the sea-front, overlooking the pristine waters and open to spectacular panoramic views of some of Langkawi's archipelago. They come with a restful, airy ambience inspired by mediaeval castle architecture. Nautilus Grill, named after the rare deep-water sea shell, offers cosy dining with seafront seating, where guests can choose from a variety of culinary styles.See more
From$24Per night
Bella Vista Express LangkawiLangkawi, Langkawi and Kedah , Jalan kuala muda, padang matsirat -/5 Customer reviewsof 1 Opinions
This elegant hotel is situated on the western portion of the island amongst a strip of hotels in Langkawi, facing the Andaman Sea. The hotel is within easy reach of local attractions including Langkawi Underwater World and the Langkawi Caves and Mangroves. The property features a beautiful décor merging elegance of the Asian and European cultures to provide a unique hotel experience, designed with guests' comfort in mind. Travelers may completely loosen up in the spacious and elegant guest rooms, where sleek fabrics, cosy furnishings and top-notch amenities guarantee a truly enjoyable stay. On warm days visitors may take a cooling dip in the shimmering pool or soak up the sun at the poolside terrace. Travelers may also enjoy a rich breakfast for a great start to the day. There is an on-site parking and in case of any query, travellers may turn to the helpful staff at the24-hour reception.See more
From$23Per night
Situated in the south of the island, the hotel provides a sanctuary with easy access to just about everything Langkawi has to offer, for business or pleasure. This beach hotel is located opposite Langkawi Underwater World and The Zon, a duty-free shopping centre. It is a 10-minute drive from Langkawi International Airport. This business and beach hotel is one of Langkawi's premier business and holiday establishments. Renovated in 2011, the property offers 38 rooms and also provides a newspaper stand, conference and meeting facilities, as well as room service. All rooms are en suite and feature a hot shower, a king-size bed, satellite/cable TV and a minibar. The property has an outdoor swimming pool with sun loungers at the water's edge. Fans of the fairway can visit Kelab Golf Langkawi about 14 km away.See more
From$73Per night
Langkawi Lagoon ResortLangkawi, Langkawi and Kedah , Lot 78, jalan kuala muda, padang matsirat -/5 Customer reviewsof 5 Opinions
The luxurious Langkawi Lagoon Resort is located on the west coast of the island just a 5 minutes' drive from the Langkawi International Exhibition Centre. Guests can enjoy leisurely strolls along the pristine, white sands, explore the attractions of the island or simply lie back and enjoy the sounds of the sea. The centre of Kuah town is just a 20 minute drive away where guests can find an array of historical and cultural attractions, shopping venues and dining options.Boasting spectacular views of the nearby rolling hills and the crystal-clear waters of the sea, the hotel blends beautifully into its natural surroundings. The resort offers a choice of accommodation options from elegantly-presented rooms and Suites to the intriguing Sea Village units, which have been built on stilts and feature a typical Malay architectural design.See more
From$55Per night
Bayview Hotel LangkawiLangkawi, Langkawi and Kedah , Jalan pandak mayah 1, pusat bandar kuah -
The Bayview Hotel Langkawi is located in the heart of the commercial district of downtown Kuah and is a 25-minute drive from the airport. The local attractions include Black Sand Beach, Mahsuri Memorial Mausoleum, Langkawi Wildlife Park and the Payar Island Marine Park.The hotel features 282 bedrooms, ranging from superior rooms to the presidential suite. All come with an ensuite, telephone, a TV, mini-fridge, adjustable air-conditioning and a safe. Guests can use the state-of-the-art gym and swimming pool, re-energise in the Jacuzzi or relax at the spa. Other hotel facilities include a hairdresser's, bar and conference rooms. Dine at the hotel restaurant offering delectable cuisine. The guest's visit to the Bayview Hotel Langkawi combines the perfect blend of comfort and hospitality for both business and leisure travellers alike.See more
From$45Per night
Favehotel Cenang BeachLangkawi, Langkawi and Kedah , Lot 119, pantai tengah, mukim padang mat sirat -/5 Customer reviewsof 34 Opinions
This selected service modern beach hotel is the first of its kind on the island to present its guests with such a perfect mix of style, functionality and good value. Located just a short stroll from the white sandy shores of Cenang Beach in Langkawi. That is the island's liveliest area offering a myriad of attractions, such as beachfront restaurants, bars, nightclubs, trendy boutiques and water sports. There is public transport at the jetty, approximately 21 km away and Langkawi International Airport is also about 21 km, or a 20-minute drive, from the hotel. Guests of the venue can soak in the sun at the outdoor swimming pool or work on their perfect tans on the rooftop sun terrace. If some pampering is needed spa treatments are available, and when the day rolls to its end the lounge bar of the venue is the ideal spot for enjoying a refreshing cocktail and a pleasant conversation.See more
From$408Per night
The Danna LangkawiLangkawi, Langkawi and Kedah , Po box 236, telaga harbour park, pantai kok -/5 Customer reviewsof 12 Opinions
The Danna Langkawi is a magnificent luxurious hotel surrounded by tropical and lush vegetation which enjoys a super location on the west coast of the legendary island of Langkawi, form where it provides breath-taking views of the ocean and the surrounding landscapes. The hotel boasts elegant and spacious facilities, including a beautiful infinity pool. The hotel boats fantastically decorated guest rooms featuring a magnificent design which blends into a harmonious and typical local identity.See more
From$11Per night
Bahagia Hotel LangkawiLangkawi, Langkawi and Kedah , Prsn. bunga raya, langkawi mall, phase ii, kuah 68-78 -/5 Customer reviewsof 7 Opinions
Build in 2008 this modern city-hotel aims to provide its guests with comfortable accommodation and great services. It is about a 10-minute drive from Kuah Jetty. Several popular landmarks, interesting areas, shopping venues and restaurants surround the hotel, making it very conveniently placed. Langkawi International Airport can be reached within a 25-minute drive. Business travellers will be pleasantly surprised by the onsite conference facilities and the high-speed WiFi access, which allows for working while on the road. Guests can enjoy a drink at the café or dine in the restaurant, which offers both traditional and international dishes. For the fans of the fairway or for those looking to take their business meetings outside, the staff can make arrangements with the nearby Gunung Raya course.See more
Information about Langkawi and Kedah
Langkawi is an archipelago of 99 islands in the Andaman Sea, off the mainland coast of northwestern Malaysia. The islands are a part of the state of Kedah, which is adjacent to the Thai border. Kedah is a rather small state and the Langkawi islands are opposite its coast. This state is considered to be the ""rice bowl"" of Malaysia, given its many paddy fields. The area's beaches and islands are some of the most beautiful in Southeast Asia: white sand that shines under a bright tropical sun and a gentle sea breeze. The landscape is truly lovely. One of the most interesting places to visit here is the Bujang Valley or Lembah Bujang, a sprawling historical complex in the foothills of the Gunung Jerai. This is Malaysia's richest area as regards archaeology. There is proof that there was an ancient Hindu-Buddhist empire here around the year 300. The area also includes a large number of museums with detailed historical information. Visit Langkawi and Kedah: a beautiful region with outstanding natural landscapes.
Points of interest
- Dataran Lang
14 hotels nearby
- Laman Padi
11 hotels nearby
- Langkawi Cable Car
3 hotels nearby
- Langkawi International Airport
6 hotels nearby
- Legenda Park
14 hotels nearby
- Makam Mahsuri
1 hotels nearby
- Oriental Village
3 hotels nearby
- Telaga Tujuh (Seven Wells)
3 hotels nearby
- Underwaterworld
11 hotels nearby
Most popular zones from Langkawi and Kedah
- Alor Star
2 Hotels
- Kulim
1 Hotels
- Langkawi
45 Hotels
- Sungai Petani
1 Hotels


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Why NHL 11 should be the next TNT game.
By Hockeymask27 38 Comments
First let me start of by saying this is more a writing exercise due to boredom and I have no hopes this will be take seriously. The purpose of this blog is to express my feelings as to why NHL 11 should be the next TNT game. I'll go over in my opinion what characteristics of games in general make for better TNT's. Why NHL 11 would satisfy those characteristics. So lets get on with it.
Its been a little over a year since TNT began here on Giantbomb. While all TNT's form Super Street Fighter 4 to Dirt 3 have been entertaining at times some TNT have been more successful then others. What make some TNT's better than others? The first thing that pops into my mind is not being a FPS. Don't get me wrong I love shooting dudes in the face as much as the next guy. However FPS limits watch-ability as it gets kind of repetitive after 2 hours. Also when dealing with FPS it limits the ability for the community to interact with the staff members besides shooting them in the face. Think about the Red Dead TNT is was great seeing the community going up to tall tress with Ryan bear hunting. Another problem with FPS or even third person shooters it limits guests on the shows comments to usually "shoot that guy"
Another great staple in a good TNT is the ability to have has many people as possible participate in the given 2 hours. Lets face it you would be pretty bummed out if you made it on to the GBTNT friend list just not get a chance to participate. That is where I believe racing games fall short. Dirt 3 has a recent example only limit amount of people could join and because of the session length only a number of races were possible.
When it comes to a great TNT community creation seems key. I love hearing the Staff go nuts of the dumb/cool shit the community can come up with. Heck even the staff can get into at times. Seeing those crazy caws in WWE All-Stars was great. Recently Virtua Davis stole the show in the Tennis TNT. I think when players can show off there creative side everyone wins. Just ask Jeff "UNO".
Finally the most important thing in a stellar TNT, The possibility for a crazy as shit to happen. From crazy crashes in racing TNT's to comebacks in fighting games TNT to epic fails in shooting TNT's nothing more satisfying for me then watching the Staff either losing there shit laughing or be shocked by how cool something just was.
So why would NHL 11 be a great TNT game? First of all. The Staff almost know nothing about hockey. Which leaves the door open to crazy stories about the one time they almost watched a game. Or crazy misconceptions about the sport. More Importantly however by playing 6 vs 6 team play we can get the community involved fast. Having people team up with the staff is always fun. Also since Ryan would have five team mates it wouldn't matter if he had no idea what he was doing he could learn while is team mates carried him. I'm sure the staff would get kick out of some players made up player names and how they designed their player. I could see the possibility of awesome goals,plays and goal celebration. I'm sure the staff will love the after whistle mayhem and fights. With the ability of having Canada vs USA games there could be some intense community competition.
More of this please.


text:
Northcote plays host to many events, from the world renowned Obsession every January to wine tasting, cookery classes and more.
Upcoming Events
- 8th October 2015 - Sabrage Evening - a Celebration of Champagne
- 22nd October 2015 - A Taste of Game - in Association with BASC
- 19th November 2015 - Caviar Evening
- 3rd December 2015 - Wine Evening in Association with Riedel
- January/February 2016 - Obsession 16 (dates TBC)
- February 2016 - Truffle (date TBC)
Sabrage Evening - a Celebration of Champagne
Thurs 8th Oct, 2015
We invite you to become a "Sabreur of the Confriérie" at Northcote on the 8th of October. You will be handed a Sabre and a chilled bottle of champagne to sever the top of the bottle with the sword's blade - don't worry, rarely does anyone fail with the expert guidance from the visiting Maître-Sabreur! And of course, once sabraged the bottle releases its precious contents for your enjoyment...
A Taste of Game
Thurs 22nd Oct, 2015
Join us for an evening of game in association with British Assocation for Shooting and Conservation (BASC).
Obsession is Northcote's annual homage to the finest food and wine, established as one of Europe's premier gastronomic events. Each chef challenges themselves to produce a unique Obsession Menu. Each dish is meticulous in construction and a feast for all the senses.
The Cookery School
Four cooking stations will offer a unique facility, for cookery courses, master classes and demonstrations. Enjoy a variety of courses from basic skills to modern techniques; from dinner parties with food and wine matching tips to Just Desserts; classic Northcote to a masterclass on sauces. These courses will be delivered by Northcote's Head Tutor Michael Vanheste, Lisa Allen or Nigel Haworth. The next cookery school schedule will be released mid-February.


text:
|Comments on Photo
|Add Comment
By Jason Halladay
From: Los Alamos, NM
Apr 25, 2012
|Nice one, Chris. Thanks.
By Jason J Patton
Apr 25, 2012
|Great photo. There is however a trail and cairns in the portion you marked bushwack. The trail is very sparse and fades in and out but it is there and there are cairns as well.
By Craig Childre
From: Lubbock, Texas
May 1, 2012
|Thanks Chris! That is exactly what I desired. This confirms that I read the approach instructions properly. Can't wait to make an attempt next season.
By Ben Burnett
From: Colorado
Sep 30, 2013
Nice shot!
How long is the rap? Can it be done with a single rope? (30 m 40 m or 70 m)
By George Perkins
From: Los Alamos, New Mexico
Oct 24, 2013
|The rappel is 30m. A single 60m rope works. However, a fixed line is usually present.
By Bill Lawry
From: New Mexico
Sep 7, 2015
6 Sept 2015
The fixed rap line at the SE end of The Shield has a one inch length of exposed core mid-way down; it is a sun-bleached static line. The sheath hasn't yet slipped down into an impassable mass for rap devices. Suggest rapping with own rope.
This damaged area is at the same spot as in the last rope years ago. Adjusting the rope, say, up a few feet once a year might make just enough difference.
The two fixed-hand-line sections seem ok, although those ropes may be older than the fixed rap line.
The fixed rap line may be most important for ascent, since parties coming down usually will already have a rope. Ascent may be important if bailing from a climb (e.g., injured partner, no cell phone) and so needing to efficiently reverse the approach.
Arrangements for replacement are being made.
|Avg Score
|5.0 from 4 votes
|Your Score
Beyond the Guidebook:
The Definitive Climbing Resource
Inspiration & Motivation
to Fuel Your Run
Next Generation Mountain
Bike Trail Maps
Backcountry, Sidecountry
& Secret Stashes
Better Data. Better Tools.
Better Hikes!


text:
M.Sc. Database Systems
- On Campus
- 12 months
- GBP13000 Year (Non-EEA)
- English
- Request free info
This course has been designed to enhance your professional abilities, and deepen your knowledge and understanding of emerging, state-of-the-art database technologies. It will equip you with the range of highly marketable, hands-on skills required in data modelling, and in designing, managing, monitoring and administering corporate database systems divisions, information centres and webenabled database applications.
The course combines academic study with Oracle certification training, and you will be encouraged to take the associated Oracle exams and become an Oracle Certified Associate. It is suitable for recent graduates who wish to study for a higher qualification and/or gain relevant technical and professional skills in database systems. Its also a strong course for practitioners looking to enhance their professional abilities, develop their careers, and update their technical skills, knowledge and understanding of state-of-the-art and emerging technologies.
The course addresses new technologies, and advanced theories and techniques, along with their application, implementation and integration with legacy systems. You will analyse new demands and the application of new technologies in the management of data and information resources, and examine emerging technologies shaping the way data is now processed, accessed, retrieved, structured and modelled.
The course offers three specialist pathways or themes which can lead you to different areas of the database systems environment. One pathway leads to roles related to database administration and the ability to deliver and administer web-enabled database solutions. A second pathway leads to roles related to database application development, and the ability to deliver web-enabled information systems solutions. The third pathway focuses on the role of data architect, and the skills and knowledge needed to organise and design data and manage projects in a way that harnesses potential emerging technologies.
Teaching methods include lectures, student-led activity and smaller, instructor-led groups. You are encouraged to gain greater understanding of topics through practical activity and the use of scaled down versions of real life scenarios. The Oracle training materials that we use will prepare you to take the Oracle Certified Associate (OCA) exams. Assessment usually involves a combination of exams and coursework, leading to a product such as a presentation, group investigation, technical solution, a piece of software or a research review. Exams are normally two hour long and take place at the end of the year.
IMPORTANT NOTE: Per 6 April 2015 only the English language tests from IELTS and Trinity College London are accepted for Tier 4 Visa applications to the United Kingdom. Other tests (including TOEFL, TOEIC, Pearson, City & Guilds) are no longer accepted for Tier 4 visa applications to the United Kingdom. The university might still accept these tests to admit you to the university, but if you require a Tier 4 visa to enter the UK and begin your degree programme, these tests will not be sufficient to obtain your Visa. Since the Trinity College London language tests must be taken in one of their exam centres in the UK, IELTS is now the only language test accepted for Tier 4 visas to the UK that can be taken worldwide.
The IELTS test is most widely accepted by universities and is also accepted for Tier 4 visas to the UK- learn more.
You are expected to have a good Honours degree (at least a Lower Second) from a UK university (or overseas equivalent) in an IT or computing discipline, or in another discipline that either provides important underpinning for or insight into IT and computing, or it is closely related to it (eg sciences or engineering). You may also be considered according to work experience and other qualifications. If your first language is not English you will need an IELTS score of 6.5 or equivalent.
No work experience is required.
Fortunately enough I was able to find StudyPortals. Right from the start of the application to getting the confirmation of admission I was using StudyPortals.
Sign up for your personal newsletter and we will help you too.
We will send you all the information you need to find your dream study programme!
Together with the ISIC Association and British Council IELTS we offer you the chance to receive up to £10,000 to expand your horizon and study abroad. We want to ultimately encourage you to study abroad in order to experience and explore new countries, cultures and languages.
The University of Westminster was founded as Britain's first polytechnic in 1838. Since then it has developed into a university that combines both metropolitan and cosmopolitan dimensions, and which is closely involved in business, professional and academic life within London, as well as overseas.


text:
Hampshire young drivers warned not to become a statistic
A cinema advertisement by Hampshire's road safety team warns young drivers and their passengers that they run a greater risk of crashing than other road users.
The live action advert will be aired at cinemas across the county for six weeks from 23 October to coincide with a number of film releases expected to be popular with the 17- 24 years age group.
Using real life video footage from the emergency services, the advert highlights that inexperienced young drivers run a greater risk of injury and death in road crashes and that the danger increases if they have young adult passengers.
Ernie Sage, Hampshire's road safety services manager, said: "We're hopeful the advert will raise awareness and discussions amongst young drivers about being responsible on the roads.
"It highlights that at any second something could happen that requires you to take action, but being distracted means your reactions might not be fast enough and that could be fatal."
For further information contact Charlotte Tilling on 01962 832204.
In cycling safety campaigns / material, should cyclists always be shown wearing helmets?PREVIOUS SURVEY Can shared space schemes improve road safety? YES 51% | NO 28% | NOT SURE 21% (Final result - 102 responses)
Survey results archive...
How to overtake cyclists
A new film featuring British Cyclings Chris Boardman and driving instructor Blaine Walsh shows drivers how to safely overtake cyclists.
More videos...


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Customer Service available Mon - Fri 9am to 9pm EST Sat & Sun 1pm to 8pm EST
Department Emails | Staff Directory | International Licensing Partners | Contact Your Representative
|Samuel French, Inc.
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|Phone: 1-866-598-8449
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|Phone: 00 44 20 7387 9373
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Samuel French's new extended Customer Service Hours in the United States offer Phone and Live Chat Support 7 days a week! We try our best to be accessible when it's convenient for you!
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Licences to perform are issued by Samuel French Inc. and their authorized international licensing partners as follows. Please note that the prices and fees quoted in our website will not be applicable overseas.
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Samuel French, Ltd.
E-mail: firstname.lastname@example.com
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text:
Idols a Weary Burden
1Bel bows down; Nebo stoops over. Their idols are for beasts and cattle. The things you carry are borne as burdens on weary beasts.
2They stoop, they bow down together, they cannot save the burden, but themselves go into captivity.
3"Listen to Me, house of Jacob, all the remnant of the house of Israel, borne by Me from birth, carried from the womb.
4Even to your old age I will be the same, until you are gray I will carry you. I have done it; I will bear you; I will carry you; I will deliver you.
5To whom will you liken Me, or make Me equal or compare Me, that we should be alike?
6They lavish gold from a purse and weigh out silver on the scales. They hire a goldsmith so he makes a god. They bow down. Yes, they worship it.
7They lift it upon a shoulder and carry it. They set in its place and there it stands. It does not budge from its place. Even if one cry to it, it cannot answer, nor save anyone from his trouble."
Purpose for Cyrus
8"Remember this, and be assured. Recall it to mind, you transgressors.
9Remember the former things of old: For I am God—there is no other. I am God, and there is none like Me—
10declaring the end from the beginning, from ancient time, what is yet to come, saying, "My purpose will stand, and I will accomplish all that I please."
11From the east I am calling a bird of prey, a man for My purpose from a far country. Truly I have spoken; I will bring it to pass; I have planned it; surely I will do it.
12Listen to Me, you stubborn-hearted, who are far from righteousness:
13I bring My justice near, it is not far off. So My salvation will not delay. I put salvation in Zion, My glory in Israel."
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Will Ferrell
Most Recent Articles
Watch Will Ferrell Drop His Mark Twain Trophy
Hot potato!By Eliot Glazer
Watch Famous People Salute Will Ferrell
Everyone loves Will Ferrell (except Larry David, apparently).By Eliot Glazer
Read the FAQ for Will Ferrell's Charity Golf Tournament
The Will-Power Golf Classic encourages you to leave your wallet and wives at home.By Amanda Dobbins
Adam McKay to Direct Will Ferrell and Mark Wahlberg in Football Comedy
Previously known as 'Turkey Bowl,' now known as 'Three Mississippi.'By Claude Brodesser-Akner
Watch Will Ferrell, Will Forte, and Other Comedians Explain the 'Manifesto for Conscious Men'
Dear Woman, Free yourself!By Amanda Dobbins
Watch Will Ferrell on 'Between Two Ferns With Zach Galifianakis'
With a handsome surprise guest.By Amanda Dobbins
Last Night on Late Night: According to Bradley Cooper, Robert De Niro Texts Like a High School Bro
Plus, Maya Rudolph is annoyed with the reception of 'Bridesmaids' as a women's triumph and not simply as a successful comedy.By Nim Barshad
Will Ferrell Is Making Another Sports Comedy
With Mark Wahlberg.By Kyle Buchanan
How Will Ferrell Prepared to Play a Depressed Alcoholic in Everything Must Go
It involves many, many beers.By Margaret Lyons
Last Night on Late Night: Judd Apatow's Kids Have Filthy Mouths, If Abbreviations Count
Plus, Will Ferrell makes one of the greatest late-night entrances we've seen in 2011.
Watch a Special Breaking News Report From Will Ferrell's President Bush
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See Will Ferrell and John C. Reilly Sharing a Romantic Kiss-Cam Moment
They love each other, see.By Amanda Dobbins
Unofficial Party Down Reunion to Be Produced by Will Ferrell
Kirsten Dunst is involved, too.By Amos Barshad
Last Night on Late Night: Will Ferrell (Finally) Shaved Conan's Beard
Plus, Jimmy Kimmel wins the night as far as bin Laden death monologues, in our regular late-night roundup.By Nim Barshad
Last Night on Late Night: Lindsay Lohan Drops In for a Surprise Visit
Plus, Will Ferrell has a severe case of royal-wedding fever on our regular late-night roundup.By Nim Barshad
The President Meets and Eats With Clooney, Katzenberg, and Spielberg at Tavern
The President welcome heavy-weight Hollywood players to a benefit dinner last night.By Hadley Tomicki
The President Meets and Eats With Clooney, Katzenberg, and Spielberg at Tavern
The President welcome heavy-weight Hollywood players to a benefit dinner last night.By Hadley Tomicki
Which of Will Ferrell's Old SNL Characters Is He Channeling on The Office?
Deangelo Vickers might as well drive a Dodge Stratus.By Margaret Lyons
Last Night on Late Night: Robert Pattinson Is a Homeless Hoarder
Plus, beard terrorist Will Ferrell strikes again, on our regular late-night roundup.By Nim Barshad


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text:
This is the root of the common Lisp Directory. The whole tree of tags starts here.
If you are new to the Common Lisp Directory, you should probably first have a look at the "By topic" link below or at the "Tags" and "Index" links above.
The items lists (Libraries, documents, events, etc.) are limited to about 20 items randomly taken from the whole lists. Click on the titles or the "View all (n more)" links to see the full lists of items with their descriptions.
The CLD is written in Common Lisp.
By Topic (681 items) Resources for Common Lisp sorted by topic
Frequently Asked Questions (8 items) The Common Lisp Directory FAQ
Information (189 items) Various sources for information
Software (621 items)
By Support (93 items) Resources sorted by kind of support (books, web-sites, etc...)
People, Groups and Organizations (330 items) Humans related to Common Lisp
Programming Languages (162 items)
Standards and Specifications (57 items)
By Operating System (454 items) Resourses sorted by Operating System
By License (588 items) Resources sorted by their license
Human Languages (27 items)
By location (172 items)
Other resources (3 items) Resources that are not already in the other tags
Lisp Jobs (2 items) Lisp Jobs opportunities
Heresy | cl-ncurses | LPVM | The Feebs War | SubX | cl-rdbms | DE.SETF.AMQP: a Common Lisp client library for AMQ... | CL-TELNETD | KM: The Knowledge Machine | MOP Feature Tests | iaxphone | cl-semantic | CL-PNG | Calcul des fréquences d'occurrence des caractères,... | TMYCIN | User Manual: Automatical User Manual Creation | SAVE-OBJECT | cl-i18n | spatial-trees | Petri Net Editor | Paradigms of AI Programming Source Code | fare-csv | SKIPPY | Common Music | dict.lisp | cl-cgi | WeirdIRC | Pixel Art Library | CLX-DRAWING-WINDOW | SigLab | Anaphora | cl-cracklib | Exscribe | UCPOP Planner | Closure
View all (634 more)...
Daniel Bobrow CLOS video from 87 | Lispjobs | Common Lisp Interface Manager - CLIM II Specifica... | Software Bits | BioLisp.org | Using Common Lisp to Build Web Applications | The Nature of Lisp | Common Lisp FAQ for comp.lang.lisp newsgroup | lispweb | Using ASDF with Corman Common Lisp | Berkeley SICP Lectures | CDR 1: The CLOS Metaobject Protocol | Hacking CL into a Lisp-1 (an intro to code-walking... | NCITS/J13 Document Repository | small-cl-src | Planet CLiki | Maintaining Portable Lisp Programs - It's a bug, n... | Setting up ASDF for CLISP+Win32 | Some Useful Lisp Algorithms: Part 1 | Dynamic Learning Center
View all (167 more)...
Kilian Sprotte | Rahul Jain | Jean-Philippe Paradis | Nick Levine | Roger Corman | Damyan Pepper | Matthew Backes | Iban Hatchondo | Tamás Borbély | Gustavo H. Milare | Bruno Lartillot | Alexandre Buisse | Brandon Werner | Kenny Tilton | Graham Fawcett | Jörg Höhle | Hazen Babcock | Leonardo Varuzza | Joel Reymont | Brian Mastenbrook | Asbjørn Bjørnstad | António Menezes Leitão | Magnus Henoch | Ossi Herrala | Jason Lowdermilk | Markus Flambard | Stuart Russell | Will Fitzgerald | Juliusz Chroboczek | David Creelman
View all (281 more)...
International Lisp Conference 2009 | European Common Lisp Meeting 2008 | International Lisp Conference 2007 | 3rd European Lisp Workshop | LispNYC May 2006 Meeting - Peter Seibel | European Common Lisp Meeting 2006 | LispNYC November 2005 meeting | 2nd European LISP and Scheme Workshop | International Lisp Conference 2005 | European Common Lisp Meeting 2005 | 1st European Lisp and Scheme Workshop | International Lisp Conference 2003 | Japan Lisp User Group Meeting 2000
Movitz | Armed Bear Common Lisp | Ufasoft Common Lisp | Golden Common Lisp | Emacs Common Lisp (NaCL) | WCL | Corman Lisp | Steel Bank Common Lisp | Allegro Common Lisp | Liquid Common Lisp | Steel Bank Studio | GCL | ECL | CMUCL | LispWorks | Star Sapphire Common Lisp | SBCL | Open Genera | Generic ANSI Common Lisp | CLISP
View all (8 more)...
Lisp-it | Clozure Associates | Debian | Common-Lisp.biz | SISCOG - Sistemas Cognitivos Lta | HPC Platform | LispNYC | Ystok-Systema | ITA Software | Gothenburg Lisp User Group | Algorithme - Information Technology services | The Tech Co-op | Cadence Design Systems GmbH | Consequor Consulting AG | Lispworks Ltd. | Lisp.se | Albuquerque Lisp and Scheme Users | CRISPYLOGICS | Department of Computer Science and Engineering, FE... | RavenPack
View all (9 more)...
YstokCard - smart card API (PC/SC)(Modified)| YstokGrid(Modified)| CL-Typesetting(Modified)| CL-PDF(Modified)| Jean-Philippe Paradis(Added)| Armed Bear Common Lisp(Annotated)| Allegro Common Lisp(Modified)| CLFSWM - A(nother) Common Lisp FullScreen Window M...(Modified)| Ystok-URI - library for representing, parsing, and...(Added)| Clon, the Command-Line Options Nuker(Modified)| Common Lisp Reasoner(Modified)| ASDlite(Modified)| Ystok-Library(Modified)| Ystok-Local-Time(Modified)| YHTML-Template(Modified)| cl-gdata(Added)| Michael Filonenko(Added)| cl-portaudio(Added)| YstokHTML - collection of HTML generator, parser a...(Added)| Common Lisp User Space File System(Added)| cl-btree(Added)
View all last modified items...
(Notes are similar to comments but for adding precisions or facts)
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Comments and Notes Welcome
You can comment and/or add notes to all the tags and items of the Common Lisp Directory.
Submitted by admin 3584 days 4 hours 46 min ago
Comments added to RSS feeds
Now the commented items are added to the RSS feeds so that it's possible to see what have been commented recently.
Submitted by marc.battyani 3524 days 8 hours 35 min ago
unicode possibilities
It would be nice if cl-user would display unicode input for CJK text. With PCL and On Lisp getting new printings in Japan, it might be beneficial to attract more brain-share from that side of the world. Would this be considered out of cl-user.net's scope?
Submitted by charliemac 2620 days 2 hours 20 min ago
Perhaps it would be interesting to open up a "universities" category (or subcategory of Organization) to list universities that teach lisp?
Submitted by informatimago 2612 days 17 hours 37 min ago
re: universities
This is a good idea. Done.
Submitted by marc.battyani 2609 days 21 hours 51 min ago
re: unicode possibilities
I have to think about it.
The use of English as the standard language is prefered so that the information is useable by most lispers.
I don't mind some other language content though.
Submitted by marc.battyani 2609 days 21 hours 23 min ago
Change descriptions may accept invalid characters
Attempting to view the "Last Modified Items" RSS feed in the Google Chrome browser gives the error: "error on line 10 at column 2048: PCDATA invalid Char value 12". Adding the feed in Mozilla Thunderbird: "<feed URL> is not a valid feed."
Submitted by WalterGR 1737 days 4 hours 22 min ago
Repository access
Many sites have a link to view the repository such as:
Source code repository http://common-lisp.net/cgi-bin/viewcvs.cgi/?cvsroot=cl-semantic
however, I can't find any place that describes how to convert that link into something that can be used to actually check out the source code. I'm very suppressed this hasn't been an issue before.
Submitted by blake1024 1371 days 17 hours 3 min ago


text:
UW-Manitowoc is a member of the Wisconsin Collegiate Conference (WCC).
WCC Handbook
Fall 2015
Quarter I (Sept 15 - Oct 27)
Flag Football: Tuesdays & Thursdays, 12:15-1pm
Create your own team or stop by Athletic Director Neil Hall's office, H141 to sign-up as a free agent. There is a free agent registration form posted on the bulletin board just outside H141. Once again, at the end of the season our campus champs will travel to UW-Sheboygan to square off against their rival in the Lakeshore Bowl! Please turn-in your rosters or sign-up as a free agent by Friday, September 11!
Quarter II (Nov 6 - Dec 4)
Volleyball: Wednesdays, 12:05-12:55pm
Spring 2016
Quarter III
3 on 3 Basketball
Sign-up for intramural 3-on-3 basketball! Please download and fill out a roster, or you can find a roster on the bulletin board outside the gym. Rules are on the back of the roster.
If you want to play, but don't have a team, email me or stop by the Athletic Director's office to sign-up. Play will begin Tuesday, February 10 at 12:15 in the gym. Please turn in rosters to Neil Hall by Monday, February 9.
Quarter IV
6 on 6 Soccer
General Information
- Please register teams by the start date. Completed roster forms should be returned to the Athletic Office
- Games will be played from 12:15 PM to 1:00 PM
- Teams may consist of all female, male or co-ed participants
Contact the Interim Athletic Director Neil Hall at 920-683-4737 for more information.


text:
The Mystery of Flying Kicks
(NSFW: Language) It's not a martial arts film, but The Mystery of Flying Kicks is still worth watching. It explores the urban custom of throwing shoes up on power lines and the various reasons for and reactions to it.
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APL Materials is an open access journal featuring original research on significant topical issues within the field of materials science, including nanomaterials and nanostructures, electronic, magnetic & optical materials, organic materials, polymers, biomaterials, energy and environment materials, carbon & amorphous materials, and general functional materials. The journal emphasizes very high quality, timely work. Our vision is to be the foremost, rapid publication, high impact materials journal.
Editor's Picks
Double-shelled hollow hybrid spheres consisting of plasmonic Ag and TiO2 nanoparticles were successfully synthesized through a simple reaction process. The analysis reveals that Ag nanoparticles were dispersed uniformly in the TiO2 nanoparticle shell. The plasmonic Ag-TiO2 hollow sphere proves to greatly enhance the photocatalytic activity toward reduction of CO2 into renewable hydrocarbon fuel (CH4) in the presence of water vapor under visible-light irradiation. The possible formation mechanism of the hollow sphere and related plasmon-enhanced photocatalytic performance were also briefly discussed.
Herein, Cu 2O spheres were prepared and encapsulated with reduced graphene oxide (rGO). The Cu 2O–rGO–C3N4 composite covered the whole solar spectrum with significant absorption intensity. rGO wrapped Cu 2O loading caused a red shift in the absorption with respect to considering the absorption of bare C3N4. The photoluminescence study confirms that rGO exploited as an electron transport layer at the interface of Cu 2O and C3N4 heterojunction. Utmost, ∼2 fold synergistic effect was achieved with Cu 2O–rGO–C3N4 for the photocatalytic reduction of 4-nitrophenol to 4-aminophenol in comparison with Cu 2O–rGO and C3N4. The Cu 2O–rGO–C3N4 photocatalyst was reused for four times without loss in its activity.
Ag 9(SiO4)2NO3 was prepared by a reactive flux method. The structures, morphologies, and light absorption properties were investigated. Owing to the polar crystal structure, an internal electric field can be formed inside the material, which can facilitate the photogenerated charge separation during the photocatalytic process. Based on both the wide light absorption spectra and high charge separation efficiency originated from the polarized internal electric field, Ag 9(SiO4)2NO3 exhibit higher efficiency over Ag 3PO4 during the degradation of organic dyes under visible light irradiation, which is expected to be a potential material for solar energy harvest and conversion.
The photocatalytic properties of different calcium tantalate nanocomposite photocatalysts with optimized phase composition were studied without the addition of any co-catalysts in the photoreforming of different alcohols including the biomass conversion by-product glycerol, as well as after modification with double-layered NiOx (Ni/NiO) co-catalyst in overall water splitting (OWS). Nanocomposite photocatalyst consisting of cubic α-CaTa2O6/orthorhombic β-CaTa2O6 coexisting phases always possesses the highest photocatalytic performance. For overall water splitting, a loading of 0.5 wt. % NiOx exhibits the best activities with stable stoichiometric H2 and O2 evolution rates.
Ag/ZnO core/shell nanostructure was synthesised by a 248-nm KrF excimer pulsed laser ablation in a liquid solution for the first time. It was found that the surface plasma resonance absorption of the Ag/ZnO core/shell nanostructures can be tuned by the thickness of the ZnO shell, which is in agreement with the finite difference in the time domain simulation. Furthermore, the ultraviolet emission spectrum of the Ag/ZnO core/shell nanostructures was stronger and blue-shifted compared with that of pure ZnO nanoparticles. This interesting photoluminescent phenomenon is analysed in detail and a possible explanation is proposed.
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Latest Articles
Self-assembly growth of alloyed NiPt nanocrystals with holothuria-like shape for oxygen evolution reaction with enhanced catalytic activityView Description Hide Description
Self-assembly growth of alloyed NiPt nanocrystals with holothuria-like wire shape has been achieved via a facile and moderate hydrothermal process at 120 °C for 1 h from the reaction of nickel nitrate and chloroplatinic acid in alkaline solution in the presence of ethanediamine and hydrazine hydrate. The holothuria-like alloyed NiPt wires are Ni-rich in composition (Ni 23.6Pt) and uniform in diameter with many tiny tips outstretched from the wires surface. The holothuria-like wires are assembled from granular subunits with the assistance of capping molecular of ethanediamine and the wires display an improved oxygen evolution reaction catalytic activity.oa
Mesoporous tertiary oxides via a novel amphiphilic approachView Description Hide Description
We report a facile biomimetic sol-gel synthesis using the sponge phase formed by the lipid monoolein as a structure-directing template, resulting in high phase purity, mesoporous dysprosium- and gadolinium titanates. The stability of monoolein in a 1,4-butanediol and water mixture complements the use of a simple sol-gel metal oxide synthesis route. By judicious control of the lipid/solvent concentration, the sponge phase of monoolein can be directly realised in the pyrochlore material, leading to a porous metal oxide network with an average pore diameter of 10 nm.oa
Preface to special topic: Biomimetic crystal growth and engineeringView Description Hide Descriptionoa


text:
News Archive
Alumnus an events coordinator at ArtPrizeOctober 9, 2015
Ryan Murphy, '15, is in charge of planning and coordinating special events for ArtPrize 2015.
Steinman talks Blue EconomyOctober 9, 2015
Al Steinman, director of the Annis Water Resources Institute, will discuss water quality at Secchia Lecture.
Symphony Orchestra, local students unite for learning, performingOctober 9, 2015
More than 60 students will participate in rehearsals and performances for String Leadership Day.
Computing programs earn reaccreditationOctober 8, 2015
ABET has granted reaccreditation to programs within the School of Computing and Information Systems at Grand Valley.
Fall Arts Celebration Poetry Night to offer two-for-one showcaseOctober 8, 2015
An Evening of Poetry and Conversation with Aimee Nezhukumatathil and Kwame Dawes will take place Thursday, October 15.
Goal of customer discovery program: economic growthOctober 8, 2015
Eight teams of Grand Valley faculty members and students with potential products began a four-week training program October 2 that will help them better understand their customers and market potential.
History, societal impacts focus of Columbus Day eventOctober 8, 2015
Historical and societal impacts of the colonization of the Americas will be discussed at an event on Columbus Day, October 12.
Jonestown massacre survivor to share storyOctober 8, 2015
Laura Johnston Kohl will speak about her experiences at Jonestown and life after the tragic ordeal October 12 on the Allendale Campus.
GVSU celebrating Earth Science Week with lecture seriesOctober 7, 2015
The Geology Department will sponsor a series of lectures October 12-16 on the Allendale Campus.
Governor discusses higher ed challengesOctober 7, 2015
Gov. Snyder discussed college readiness and student success at the State Universities Summit hosted by GVSU.